Unreleased Mega Drive games

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Over the course of the Sega Mega Drive's lifetime, a number of games went unreleased. Sega VR games are not listed here — see the main article for details.

Legend
Cancelled near completion or late in development
Cancelled during development
Cancelled early in development — but known to be playable
One particular version unreleased
ROM released but game status unknown
Unknown status

Name	Involved Companies	Details	ROM Found and Released?
AD2001/Power Ball AD2001	HiCom	Info on this page is all that's known.	No
Akira	THQ	Shown in Player One #44, Console Plus #44, and Console Plus #35. Cancelled for unknown reasons.	No
"Amegedon" Project	??	Info on this page is all that's known.	No
Bean Ball Benny	Nuvision	Cancelled when Nuvision went under. Lost Levels is known to have put up a CES flier for the game, but hasn't properly labelled it as such (TODO).	No
Beyond Zero Tolerance	Technopop	The sequel to Zero Tolerance. Cancelled when Technopop closed down. The copyright holders eventually released a prototype ROM to the Internet.	Yes
City Heroes	Samsung	All that's known comes from this Hardcore Gaming 101 article: Developed by the Uzu Keobukseon team and intended for international release; it was cancelled because the then-new South Korean game censorship laws were so confusing that they got lost trying to censor the otherwise completed game.	No
Converse Hardcore Hoops/Converse City Ball Tour	Virgin	Announced in GamePro #72 and CD Consoles #8. Cancelled for unknown reasons.	No
Cybernauts: The Next Breed	Accolade	Advertised by Accolade in the packages for some of their later games... and a lot of other places too. Cancelled along with Fireteam Rogue below because they were overmarketed to the point that there would be no realistic way to have the games completed the way they were advertised and still be fun — so new Accolade management dropped them.	No
Dando/Vasum	Treco	Advertised in magazines, but no actual info is known. (MAGAZINE SOURCE UNVERIFIED — TODO)	No
Devil Buster	SIMS	Shown in the April 1993 issue of Beep!.] Cancelled for unknown reasons.	No
DNAction: The New Breed	Accolade	[ Shown in Games World #1, Banzzai Magazine #21, GamePro #56, and Player One #4.] Cancelled for unknown reasons.	No
DynoBlaze	Bonsai, Virgin	A press release was released by Virgin, and is now mirrored on unseen64. Cancelled for unknown reasons.	Yes, but not actively circulated (and is a completely different build from the one used to take the existing screenshots and footage)
Environmental Detective	Magicom	Shown in some issue of Mean Machine (TODO FIND OUT WHICH). Cancelled for unknown reasons.	No
Explode Star	NCS	The Japanese release of Trampoline Terror!. Cancelled for unknown reasons. Promotional fliers were distributed before the game was cancelled. (FLIER DISTRIBUTION METHOD UNVERIFIED — TODO)	No
Fire & Ice	Graftgold	Cancelled for unknown reasons.	No
Fireteam Rogue	Accolade	Advertised by Accolade in the packages for some of their later games... and a lot of other places too. Cancelled along with Cybernauts: The Next Breed above because they were overmarketed to the point that there would be no realistic way to have the games completed the way they were advertised and still be fun — so new Accolade management dropped them.	No
Flash Point	Sega	Cancelled for unknown reasons (presumably for the same reason Tetris was pulled from production after some copies had shipped).	Yes
Halloween Capsule	Softmax	Info on this page is all that's known. Cancelled for unknown reasons.	No
Hardcore	Digital Illusions, Psygnosis	[http://www.youtube.com/watch?v=wD_oFVeYZYo&feature=player_embedded Digital Illusions, now called DICE, had nearly completed the game when publisher Psygnosis cancelled it (and according to this linked video, taking every other unfinished MD game with it — was ResQ below a victim?). According to this linked video, which is of the game being showed by DICE to a demoparty in 2010, DICE were in talks with Sony (who owns Psygnosis, who still today owns the game's distribution license) to try to get the game released somehow — these appear to have gone nowhere